Electron configurations Vido

What is the primary role of electrons in an atom?

• Determining the atom's mass

• Determining the atom's size

• Determining chemical bonds and reactions

• Determining the number of neutrons

What is the main difference between electron configuration and orbital notation?

• Electron configuration uses arrows, while orbital notation uses numbers.

• Electron configuration describes the arrangement of electrons numerically, while orbital notation focuses on the placement of electrons in orbitals.

• Electron configuration applies to stable atoms, while orbital notation applies to unstable atoms.

• Electron configuration is for metals, and orbital notation is for non-metals.

How many orbitals does a 'd' sub-shell have?

• 1

• 3

• 5

• 7

Which principle states that electrons must occupy the lowest energy level available?

• Hund's Rule

• Pauli Exclusion Principle

• Aufbau Principle

• Heisenberg Uncertainty Principle

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At which energy level do orbitals begin to overlap?

• Energy level 1

• Energy level 2

• Energy level 3

• Energy level 4

Under what condition will a 4s electron jump into a 'd' sub-level?

• When the 'd' sub-level has 1 or 2 electrons

• When the 'd' sub-level has 4 or 9 electrons

• When the 'd' sub-level is completely empty

• When the 'd' sub-level is completely full

What is the electron configuration for Lithium (Li), which has three electrons?

• 1s1 2s2

• 1s2 2s1

• 1s2 2p1

• 1s1 2p2

How many electrons are in the 2p sub-level for Boron (B) in its ground state?

• 0

• 1

• 2

• 3